CVE-2026-18871

Published Aug 19, 2026

Last updated a day ago

Overview

Description
IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causing the host firmware boot stack to crash with possible memory corruption during system initialisation, resulting in an integrity and availability impact to the managed system.
Source
psirt@us.ibm.com
NVD status
Analyzed
Products
power_system_s1122_\(9824-22a\)_firmware, power_system_s1124_\(9824-42a\)_firmware, power_system_s1122s_\(9824-22b\)_firmware, power_system_s1114_\(9824-41b\)_firmware, power_system_l1122_\(9856-22h\)_firmware, power_system_l1124_\(9856-42h\)_firmware, power_system_e1150_\(9043-mru\)_firmware, power_system_s1112_\(9242-21b\)_firmware, power_system_s1112_\(9242-21t\)_firmware, power_system_e1080_\(9080-hex\)_firmware, power_system_s1022_\(9105-22a\)_firmware, power_system_s1024_\(9105-42a\)_firmware, power_system_s1022s_\(9105-22b\)_firmware, power_system_s1014_\(9105-41b\)_firmware, power_system_l1022_\(9786-22h\)_firmware, power_system_l1024_\(9786-42h\)_firmware, power_system_e1050_\(9043-mrx\)_firmware, power_system_s1012_\(9028-21b\)_firmware, power_system_e1180_\(9080-heu\)_firmware

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.3
Impact score
4.7
Exploitability score
2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
Severity
HIGH

Weaknesses

psirt@us.ibm.com
CWE-121

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.